Looks a lot like
this I think.
From
this page
Quote:
Quercus ilex L.
* Andricus (Cynips) dentimitratus (REJTÖ)
* (Hym.) Gallwespe, B: 5538
* Foto: Lutz Thilo Wasserthal Frankreich, 1977
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Of course, with a (genus) name it should be easier to google for more

Cheers
Arp